adwind | 32bcbaad1e453a6a32bcbb90178b7b75168c43287e51954962ed2e2c565133a1

General

Target

Zelo-Client.exe
Size

647KB
MD5

6a8c1f741fa6b769273261f408a4dc31
SHA1

fb9c298f981965d2af6b0616a87f3c2c03596311
SHA256

32bcbaad1e453a6a32bcbb90178b7b75168c43287e51954962ed2e2c565133a1
SHA512

306c7447e4e8cc7b6fa5830bfb1ef1a58dfd523fb89dc739e68bd453c6f8163631d35b5accd1717dcd18d7bc1187d69f5b67bf357325ba48c44c11db26f9bfb5
SSDEEP

12288:Rwhg3NJmAtot9EJy80QYw2U1u6/RdQ7Zzf9STRu0FdShOcymSesf:Ohg5obEc80QR2UbJM9STFfLcymS

Score

10^/10

adwind defense_evasion persistence trojan

Malware Config

Signatures

AdWind
A Java-based RAT family operated as malware-as-a-service.
trojan adwind

Class file contains resources related to AdWind 1 IoCs

resource	yara_rule
sample	family_adwind4

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	Zelo-Client.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Home = "C:\\Program Files\\Java\\jre-1.8\\bin\\javaw.exe -jar C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\.tmp\\1729466117662.tmp"	reg.exe

Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
defense_evasion

Command Obfuscation
T1027.010

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Zelo-Client.jar	Zelo-Client.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000_Classes\Local Settings	Zelo-Client.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3616	powershell.exe
3616	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3616	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1076	javaw.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4644 wrote to memory of 3616	4644	Zelo-Client.exe	84
PID 4644 wrote to memory of 3616	4644	Zelo-Client.exe	84
PID 4644 wrote to memory of 1076	4644	Zelo-Client.exe	86
PID 4644 wrote to memory of 1076	4644	Zelo-Client.exe	86
PID 1076 wrote to memory of 2844	1076	javaw.exe	89
PID 1076 wrote to memory of 2844	1076	javaw.exe	89
PID 1076 wrote to memory of 2304	1076	javaw.exe	91
PID 1076 wrote to memory of 2304	1076	javaw.exe	91
PID 2304 wrote to memory of 4120	2304	cmd.exe	93
PID 2304 wrote to memory of 4120	2304	cmd.exe	93

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2844	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Zelo-Client.exe
"C:\Users\Admin\AppData\Local\Temp\Zelo-Client.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4644
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHYAdQB3ACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAHYAeAB6ACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAGoAaABtACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGwAeABoACMAPgA="
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3616
- C:\Program Files\Java\jre-1.8\bin\javaw.exe
  "C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Windows\Zelo-Client.jar"
  2⤵
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1076
- - C:\Windows\SYSTEM32\attrib.exe
    attrib +H C:\Users\Admin\AppData\Roaming\Microsoft\.tmp\1729466117662.tmp
    3⤵
    - Views/modifies file attributes
    PID:2844
- - C:\Windows\SYSTEM32\cmd.exe
    cmd.exe /c "REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /v Home /d "C:\Program Files\Java\jre-1.8\bin\javaw.exe -jar C:\Users\Admin\AppData\Roaming\Microsoft\.tmp\1729466117662.tmp" /f"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2304
  - - C:\Windows\system32\reg.exe
      REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /v Home /d "C:\Program Files\Java\jre-1.8\bin\javaw.exe -jar C:\Users\Admin\AppData\Roaming\Microsoft\.tmp\1729466117662.tmp" /f
      4⤵
      Adds Run key to start application
      PID:4120

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Hide Artifacts

1

T1564

Hidden Files and Directories

Modify Registry

Obfuscated Files or Information

1

T1027

Command Obfuscation

1

T1027.010

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ajxdqz24.uos.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Windows\Zelo-Client.jar

Filesize
639KB

MD5
8bac893810be1acf6b083f16363a73cf

SHA1
d291c9dc85d7df6f1222d8bcaf5bb10e2578fa56

SHA256
739d2d19e79d073f9e1d1489c145879cff44c2c91e5d691d53ccc8599ac8a467

SHA512
e9dcb3dcd6924b61c67af33e88d59bc9d6b2e626234eb09aa18463e09622670d1d220024e9a504b44de23ca88bb426f295968e8d7dd644f49128c8ca7ed4d629

Download Submit
memory/1076-31-0x000001D71BB20000-0x000001D71BD90000-memory.dmp

Filesize
2.4MB

Download
memory/1076-57-0x000001D71BB20000-0x000001D71BD90000-memory.dmp

Filesize
2.4MB

Download
memory/1076-55-0x000001D71A1A0000-0x000001D71A1A1000-memory.dmp

Filesize
4KB

Download
memory/1076-39-0x000001D71A1A0000-0x000001D71A1A1000-memory.dmp

Filesize
4KB

Download
memory/1076-38-0x000001D71A1A0000-0x000001D71A1A1000-memory.dmp

Filesize
4KB

Download
memory/3616-23-0x00007FFC27F20000-0x00007FFC289E1000-memory.dmp

Filesize
10.8MB

Download
memory/3616-30-0x00007FFC27F20000-0x00007FFC289E1000-memory.dmp

Filesize
10.8MB

Download
memory/3616-20-0x00007FFC27F20000-0x00007FFC289E1000-memory.dmp

Filesize
10.8MB

Download
memory/3616-34-0x00007FFC27F20000-0x00007FFC289E1000-memory.dmp

Filesize
10.8MB

Download
memory/3616-19-0x00000240DD9E0000-0x00000240DDA02000-memory.dmp

Filesize
136KB

Download
memory/4644-0-0x00007FFC27F23000-0x00007FFC27F25000-memory.dmp

Filesize
8KB

Download
memory/4644-7-0x00007FFC27F20000-0x00007FFC289E1000-memory.dmp

Filesize
10.8MB

Download
memory/4644-2-0x00007FFC27F20000-0x00007FFC289E1000-memory.dmp

Filesize
10.8MB

Download
memory/4644-1-0x0000000000910000-0x00000000009B8000-memory.dmp

Filesize
672KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads